SPV1040TTR

Overview

The SPV1040TTR is a low-power, low-voltage monolithic step-up DC-DC converter designed for solar battery charging applications. It features an operating input voltage range from 0.3 V to 5.5 V and provides a single output voltage up to 5.2 V with a maximum output current of 1 A. The device integrates a 100 kHz fixed PWM frequency and employs an embedded Maximum Power Point Tracking (MPPT) algorithm to maximize energy harvesting efficiency under varying environmental conditions. Key electrical specifications include a 140 mΩ internal synchronous rectifier and a 120 mΩ internal power active switch. The component supports up to 95% efficiency and includes built-in soft-start functionality.

Feature Summary

• Integrated MPPT algorithm for maximizing power conversion efficiency across varying irradiation and temperature levels
• Input source reverse polarity protection to prevent damage during incorrect solar panel connection
• Comprehensive protection mechanisms including overcurrent and overtemperature shutdown capabilities
• Low voltage operation starting at 0.3 V input, suitable for depleted or low-light solar cell conditions

Applications

• Solar-powered battery chargers for portable electronics
• Energy harvesting systems utilizing photovoltaic cells
• Fuel cell powered devices requiring low-input voltage handling
• IoT sensors powered by small solar panels

Procurement Notes

Verify the specific suffix 'TTR' corresponds to the Tape and Reel packaging configuration when ordering. Confirm that the 8-TSSOP package dimensions align with your PCB footprint requirements. Ensure compatibility with the required input voltage range of 0.3 V to 5.5 V for your specific solar source. Check for RoHS3 compliance status if mandated by your regional regulations. Validate that the thermal management design accommodates the junction temperature limits specified in the datasheet.

Selection Notes

Select this component when designing systems that require efficient energy extraction from low-voltage solar sources. The embedded MPPT eliminates the need for external microcontrollers for tracking algorithms. Consider the 1 A output current limit when sizing the battery and load. The integrated synchronous rectification reduces external component count compared to asynchronous designs. Evaluate the 8-TSSOP package size against available board space constraints.

Part Context

The SPV1040 belongs to STMicroelectronics' portfolio of photovoltaic ICs, specifically targeting high-efficiency solar battery charging. It is part of a family that includes other converters like the SPV1050, which offers additional features such as LDOs. This series is designed to improve reliability and power conversion in solar applications by handling low input voltages effectively. The TTR suffix indicates the standard reel packaging format used for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Verify pin-to-pin compatibility and electrical parameter equivalence before considering alternative manufacturers. Consult official STMicroelectronics resources for potential obsolescence notices or recommended upgrades within the SPV series.